What I am looking for is the SOUND that is on the album containing the lowest recorded note, not the note itself.
Also I agree, that WAS very rude of someone putting the thumbs down when they themself probably couldn't even try to answer the question. To the first answerer,
E is the open low string on a standard 4 string bass. B flat is the open low string on a five string.
To answer your question, off the top of my head, I would say Rick Wright's long sustaining notes on the keys in the first and title cut of "Obscured By Clouds" album.
Who the heck give me a thumbs down? For what reason!?
This is not the R&S section!
If you don't agree than just pass it by.
I didn't thumbs down the first answerer.
I was not rude to the first answerer, I was just trying to help.
People who thumbs down for no reason are childish!
Then I guess your talking about the synthesizers in
"On The Run". Probably the open G string on the bass. I have no recollection of Pink Floyd using detuned instruments
Edit: My answer should be a D and not a G. What a childish mistake lol but I still stand by my answer in spirt of the third answerer edit i answered wrong... | 